Effects of site of origin, time of seed maturation, and seed age on germination behavior of Portulaca oleracea from the Old and New Worlds

2000 ◽  
Vol 78 (3) ◽  
pp. 279-287 ◽  
Author(s):  
Ali El-Keblawy ◽  
Fatima Al-Ansari
Keyword(s):  
United Arab Emirates ◽  
Room Temperature ◽  
Germination Rate ◽  
Portulaca Oleracea ◽  
Seed Maturation ◽  
Origin Time ◽  
Al Ain ◽  
Geographical Regions ◽  
Seed Age ◽  
Different Seasons

The effects of site of origin, time of seed maturation, and seed age on germination behavior, in terms of final percentage of germination and time for 50% of final germination were investigated in the widespread weed Portulaca oleracea L. Seeds were collected in August from one population at each of three geographical regions of the Old and New Worlds representing temperate (Southern Ontario, Canada), Mediterranean (Tanta, Egypt), and subtropical (Al-Ain, United Arab Emirates (U.A.E.)) climates. The freshly harvested seeds were incubated in both light and dark at 15, 25, and 40°C. Seeds of the U.A.E. site showed little dormancy and germinated faster under a wider range of incubation conditions than did seeds from the Canadian site. To assess the effect of time of seed maturation on germination behavior, seeds were collected during the different seasons (November, February, May, and August) of the U.A.E. population. The percentage of germination was significantly higher for seeds collected in May and November and germination was significantly faster for those collected in May and August. Response of germination to light and temperature varied according to site of origin and time of seed maturation. Seeds from the Canadian site and those that matured during winter from the U.A.E. site required light and high temperature for optimal germination. The effect of seed age on percentage of germination and rate was significant at the Canadian site but not at the Egyptian and U.A.E. sites. Seed stored for 5 months at room temperature germinated significantly faster and to a higher percentage than freshly harvested seeds. Results are discussed in light of the adaptation of seed dormancy and time of germination to the prevailing environmental conditions.Key words: dormancy, geographical regions, germination, germination rate, Portulaca oleracea, seed age, site of origin, time of seed maturation.

scholarly journals Variation in Seedling Characteristics of Five Populations of Acacia tortilis From the United Arab Emirates in Response to Increasing Sodium Chloride Concentrations

2001 ◽  
Vol 6 (1) ◽  
pp. 15
Author(s):  
Fatma. M. Al-Ansari ◽  
Rashied. S. Modawi
Keyword(s):  
Salt Stress ◽  
Sodium Chloride ◽  
United Arab Emirates ◽  
Germination Rate ◽  
Acacia Tortilis ◽  
Local Conditions ◽  
Al Ain ◽  
The City ◽  
Seedling Characteristics ◽  
Chloride Concentrations

Seeds of Acacia tortilis collected from 5 sites around the city of Al Ain in the United Arab Emirates were germinated in 4 concentrations of sodium chloride (0, 20, 90 and 150 mM of NaCl). Percent of germination, rate of germination, seedling moisture content, root and shoot lengths and seedling lengths were all significantly affected by salt stress. Seeds collected from the different sites were significantly different in their response to salinity conditions. Variations in the response of seedlings from different sites to the different salt treatments suggest an underlying genetic variability within the A. tortilis   populations, possibly resulting from variations in the prevailing local conditions. Urbanization in the area and the changing water table may have divided A. tortilis into distinct subpopulations that are significantly different in seedling characteristics and their response to saline conditions. 

Biologic risk factors for low birthweight in Al Ain, United Arab Emirates

1996 ◽  
Vol 8 (3) ◽  
pp. 341-345 ◽  
Author(s):  
Adekunle Dawodu ◽  
Yousef M. Abdulrazzaq ◽  
Abdulbari Bener ◽  
Inge Kappel ◽  
Larry Liddle ◽  
...  
Keyword(s):  
Risk Factors ◽  
United Arab Emirates ◽  
Low Birthweight ◽  
Al Ain

scholarly journals Potential Propagation by Seed and Cuttings of the Azorean NativeCalluna vulgaris(L.) Hull

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Maria João Pereira ◽  
Helena Fagundo ◽  
Tiago Menezes ◽  
João Couto
Keyword(s):  
Room Temperature ◽  
Seed Storage ◽  
Calluna Vulgaris ◽  
Landscape Conservation ◽  
Wild Populations ◽  
Surface Sterilization ◽  
Cultural Conditions ◽  
Germination Characteristics ◽  
Seed Age ◽  
Natural Stands

This work investigates the potential propagation by seed and cuttings of the Azorean nativeCalluna vulgaris(L.) Hull. for landscape conservation. With that purpose we have performed several germination and cuttings trials, using plant material from wild populations of this species. In the germination trials, we tested the effects of photoperiod length (8 and 16 h), temperature (10, 15, 20, and 20–10°C), seed age (6, 108, and 270 days), temperature of seed storage (4°C and room temperature), and seed surface sterilization on the germination characteristics. In the cuttings trials, we tested the effects of stem cutting type, cultural conditions, cuttings’ harvest month, and rooting substrates on the rooting percentages. The best percentages of germination, 93 and 90%, were obtained with fresh seeds and surface sterilized and sown under an 8 h photoperiod and with temperatures of 10°C or 15°C, respectively; germination after seed storage during 270 days is significantly superior (71%) when seeds are stored at 4°C. The best percentages of rooting were achieved for straight (96%) or heel cuttings (90%) harvested in March, planted on soil from natural stands ofC. vulgarisandErica azoricaHochst., outdoors in half shade, and partially covered with transparent polyethylene film.

scholarly journals The effect of religion on the perception of health states among adults in the United Arab Emirates: a qualitative study

BMJ Open ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. e016969 ◽  
Author(s):  
Iffat Elbarazi ◽  
Nancy J Devlin ◽  
Marina-Selini Katsaiti ◽  
Emmanuel A Papadimitropoulos ◽  
Koonal K Shah ◽  
...  
Keyword(s):  
United Arab Emirates ◽  
Shopping Malls ◽  
Structured Interviews ◽  
Health States ◽  
Public Places ◽  
Al Ain ◽  
Value Sets ◽  
And Gender ◽  
Perception Of Health

ObjectivesInvestigate how religion may affect the perception of health states among adults in the United Arab Emirates and the implications for research on self-reported health and quality of life and the use of values in cost-effectiveness analysis.DesignQualitative analysis of short-structured interviews with adult Emiratis carried out by a market research agency.The COREQ criteria have been used where appropriate to guide the reporting of our findings.SettingParticipants were recruited from shopping malls and other public places in the cities of Al Ain and Abu Dhabi.ParticipantsTwo hundred adult Emiratis broadly representative of the Emirati population in terms of age and gender.ResultsEighty one per cent of participants said that their perception of health states was influenced by their spiritual or religious beliefs. The two overarching themes that seemed to explain or classify these influences were ‘fatalism’ and ‘preservation of life’. Subthemes included powerlessness to change what is preordained by God, fear of disability (particularly diminished mobility) and appreciation of health and life and the requirement to look after one’s health. A final theme was that of acceptance, with respondents expressing a willingness to endure suffering and disability with patience in the expectation of rewards in the hereafter.ConclusionsOur results emphasise the need for further work to establish locally relevant value sets for Muslim majority countries in the Middle East and elsewhere for use in health technology assessment decision-making, rather than relying on value sets from other regions.

scholarly journals TAXONOMICAL CONSIDERATIONS, PHYLOGENY, PALEOGEOGRAPHY AND PALEOCLIMATOLOGY OF THE MIDDLE EOCENE (BARTONIAN) PLANKTIC FORAMINIFERA FROM JABAL HAFIT, AL AIN AREA, UNITED ARAB EMIRATES

2020 ◽  
Vol 4 (1) ◽  
pp. 10-20
Author(s):  
Haidar Salim Anan
Keyword(s):  
United Arab Emirates ◽  
Present Author ◽  
Middle Eocene ◽  
Planktic Foraminifera ◽  
Oman Mountains ◽  
Foraminiferal Species ◽  
Al Ain ◽  
Eastern Limb ◽  
First Time

The taxonomical consideration, probable phylogeny and stratigraphic significance of twenty-eight middle Eocene (Bartonian) planktic foraminiferal species from the eastern limb of Jabal Hafit, Al Ain area, United Arab Emirates (UAE), Northern Oman Mountains (NOM) are presented, and twenty one of them are illustrated. Identification of these twenty-eight species belonging to ten genera Globoturborotalia, Subbotina, Globigerinatheka, Inordinatosphaera, Orbulinoides, Hantkenina, Acarinina, Morozovelloides, Pseudohastigerina and Turborotalia has led to the recognition of three biostratigraphic zones, in ascending order: Morozovelloides lehneri PRZ (E11), Orbulinoides beckmanni TRZ (E12) and Morozovelloides crassata HOZ (E13). Eight out of the identified species are recorded, in this study, for the first time from Jabal Hafit: Globoturborotalia martini, Subbotina gortanii, S. jacksonensis, S. senni, Globigerinatheca barri, Acarinina praetopilensis, A. punctocarinata and Morozovelloides bandyi. The second or third record of three species from J. Hafit outside its original records are recently documented by the present author: Inordinatosphaera indica, Hantkenina australis and H. compressa. The paleontology, paleoclimatology and paleogeographic distribution of the identified taxa at Jabal Hafit and other Paleogene outcrops in the UAE and Tethys are presented and discussed. The identified fauna emphasis the wide geographic areas in the Tethys, from Atlantic to Indian-Pacific Oceans via Mediterranean.

scholarly journals Etiology of toe-web disease in Al-Ain, United Arab Emirates: bacteriological and mycological studies

2001 ◽  
Vol 7 (1-2) ◽  
pp. 38-45
Author(s):  
G. G. Lestringant ◽  
K. A. Saarinen ◽  
P. M. Frossard ◽  
A. Bener ◽  
A. M. Ameen
Keyword(s):  
Pseudomonas Aeruginosa ◽  
United Arab Emirates ◽  
Trichophyton Rubrum ◽  
Al Ain ◽  
Over Time

Wexamined and sampled 45 patients with toe-web intertrigo for bacteriological and mycological studies. Prominent isolated pathogens were the genus Candida [57.7%], genus Aspergillus [28.8%], Pseudomonas aeruginosa [26.7%] and coliforms [24.4%]. Dermatophytes scored 4.4% [Trichophyton rubrum]. There were 43 patents [95.5%] who presented with marked hyperkeratosis and maceration of the toe-webs involved. The tradition of the Emirati population of sitting cross-legged may, over time, induce in the toe-webs of overweight individuals a macerated pressure-reaction hyperkeratosis that is colonized by environmental germs. T. rubrum and T. mentagrophytes are uncommon in the Al-Ain environment and this may explain the rarity of dermatophytes in toe-web intertrigo in our study.

scholarly journals Impact of the COVID-19 Pandemic on Road Traffic Collision Injury Patterns and Severity in Al-Ain City, United Arab Emirates

2021 ◽  
Author(s):  
Yasin J Yasin ◽  
David O Alao ◽  
Michal Grivna ◽  
Fikri Abu-Zidan
Keyword(s):  
United Arab Emirates ◽  
Motor Vehicle ◽  
Road Traffic ◽  
Trauma Patients ◽  
Exact Test ◽  
Fisher's Exact Test ◽  
Al Ain ◽  
Fisher’S Exact Test ◽  
Road Traffic Collision ◽  
Motorcycle Injuries

Abstract Background: The COVID-19 pandemic lockdowns restricted human and traffic mobility impacting the patterns and severity of road traffic collisions (RTCs). We aimed to study the effects of the COVID-19 Pandemic on incidence, patterns, severity of the injury, and outcomes of hospitalized RTCs trauma patients in Al-Ain City, United Arab Emirates. Methods: We compared the data of two cohorts of patients which were collected over two periods; the pandemic period (28 March 2020 to 27 March 202) and the pre-pandemic period (28 March 2019 to 27 March 2020). All RTCs trauma patients who were hospitalized in the two major trauma centers (Al-Ain and Tawam Hospitals) of Al-Ain City were studied. Results: Overall, the incidence of hospitalized RTC trauma patients significantly reduced by 33.5% during the Pandemic compared with the pre-pandemic period. The mechanism of injury was significantly different between the two periods (p< 0.0001, Fisher’s Exact test). MVCs were less during the Pandemic (60.5% compared with 72%), while motorcycle injuries were more (23.3 % compared with 11.2 %). The mortality of hospitalized RTC patients was significantly higher during the Pandemic (4.4 % compared with 2.3 %, p=0.045, Fisher’s Exact test). Conclusions: Our study has shown that the numbers of hospitalized RTC trauma patients reduced by 33.5% during the COVID-19 Pandemic compared with the pre-pandemic period in our setting. This was attributed to the reduced motor vehicle, pedestrian and bicycle injuries while motorcycle injuries increased. Mortality was significantly higher during the Pandemic, which was attributed to increased ISS and reduced GCS.

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